Commit 46df8824 authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Greg Kroah-Hartman
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staging: ccree: NULLify backup_info when unused 



backup_info field is only allocated for decrypt code path.
The field was not nullified when not used causing a kfree
in an error handling path to attempt to free random
addresses as uncovered in stress testing.

Fixes: 737aed94 ("staging: ccree: save ciphertext for CTS IV")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0d527ecc

drivers/staging/ccree/ssi_cipher.c

+1 −0
Original line number Diff line number Diff line
@@ -907,6 +907,7 @@ static int ssi_ablkcipher_encrypt(struct ablkcipher_request *req) 
	unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);



	req_ctx->is_giv = false;

	req_ctx->backup_info = NULL;



	return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src,

				     req->nbytes, req->info, ivsize,